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Finding the Fourth Proportional to 287,999.61, 397,449.02 and 157,184.42

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Solution

The fourth proportional to 287,999.61, 397,449.02 and 157,184.42 is: 216,919.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,999.61 : 397,449.02 = 157,184.42 : x
  2. Step 2: Convert to fraction form
    287,999.61/397,449.02 = 157,184.42/x
  3. Step 3: Cross multiply
    287,999.61x = 397,449.02 × 157,184.42
  4. Step 4: Simplify right side
    287,999.61x = 62,472,790,915.10
  5. Step 5: Solve for x
    x = 62,472,790,915.10/287,999.61
  6. Step 6: Final answer
    x = 216,919.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.